Looking for free automotive mechanics books in PDF? We've gathered 15 titles covering automobile engineering, engine repair, diesel mechanics, automotive electrical systems, and brakes.
From beginner guides by government agencies to technical training manuals used in professional programs. Whether you're learning how a four-stroke engine works or diagnosing a diesel system, there's a book here for your level.
Browse by topic or start from the top. Every book is free to read online or download as PDF.
Auto Mechanics Books
Start here if you want a solid foundation in automobile engineering. These textbooks come from government and university programs, detailed and structured.
A government-issued textbook covering all major automotive systems from engines and transmissions to brakes and electrical systems. Ideal for students in vocational and technical programs.
A practical guide by a 20-year mechanic covering 12 topics from basic safety to brakes and engine repair. Written for beginners with no prior mechanical knowledge.
These shorter guides cover the practical side of automotive repair. Engine basics, four-stroke cycles, hybrid systems, and a comparison of electric vs. combustion vehicles.
A study guide covering engine components, the four-stroke cycle, cylinder heads, valve trains, and diesel engine basics. Well-illustrated with clear diagrams.
A consumer guide from the Federal Trade Commission on how to find a trustworthy auto repair shop, understand charges, and protect your rights as a customer.
A Creative Commons teacher guide explaining engine parts, terminology, and the four-stroke cycle with clear diagrams. Perfect for beginners starting their mechanics education.
A technical overview of hybrid electric vehicle architectures covering series, parallel, and combined drivetrains and different degrees of hybridization.
A professional consulting report comparing the total cost of ownership, emissions, and lifecycle impact of battery electric and combustion engine vehicles. Data-driven and comprehensive.
A vocational training guide from Don Bosco Technical Institute covering diesel engine history, construction, and the four-stroke cycle. Includes a clear comparison of diesel vs. gasoline engines with key term definitions.
A US Department of Energy training manual adapted by CED Engineering covering diesel thermodynamics, engine components, fuel injection systems, governor controls, and supercharging.
A US Navy training manual covering all five automotive electrical circuits including charging, starting, ignition, lighting, and accessories. Includes battery construction, alternators, ignition systems, and wiring diagrams across 101 illustrated pages.
University lecture notes covering automotive electrical fundamentals including Ohm's law, Kirchhoff's laws, 12/24/42V systems, wiring harness design, batteries, and modern CAN bus protocols.
A B-tech Automobile Engineering textbook from JNTU-Hyderabad covering chassis systems, frames, steering, brakes, and suspension types including leaf springs, independent suspensions, and telescopic shock absorbers.
University of Liège course notes on braking systems covering braking performance, weight transfer, optimal brake force distribution, drum and disc brake design, master cylinders, and brake pressure regulation.
A professional overview from the European Aluminium Association on automotive brake systems covering ABS, regenerative braking, disc and drum brakes, and the use of aluminum in calipers and suspension components.
